Guitar



FIG. 1 is a front perspective view of a guitar, showing a first embodiment of my design;

FIG. 2 is a front view of the guitar;

FIG. 3 is a side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front perspective view of a guitar, showing a second embodiment of my design;

FIG. 6 is a front view of the guitar;

FIG. 7 is a side view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines depict portions of the guitar that form no part of the claimed design. 

CLAIM The ornamental design for a guitar, as shown and described. 